If you think limiting men because they are married is good church policy, with no biblical command to, then God bless.
It’s futile to continue on this. Probably see you on some other topic.
There are more married deacons in the Catholic Church in the USA (around 15,000) than there are priests in religious orders like the Jesuits and the Franciscans (about 14,000).
Any man can make his own choice whether he has a vocation to celibacy or to marriage. If a married man takes all the necessary steps to become a Permanent Deacon, he can preside at Communion services, he can do Baptisms and Marriages, he can bring the Eucharist to the sick and homebound, he can give people religious counseling and spiritual direction, he can be a prison chaplain or a military chaplain or a hospital chaplain, he can be on the pastoral team for a parish or a chancery officer for the Diocese, he can be a Diocesan Chancellor or a Canon Lawyer or a Tribunal Judge --- and do all of this as a married man.
Just where is the problem?
Some men choose to be celibate like Jesus and St. Paul. This is what they discern they have been called to. I don't see what's wrong with letting them make this choice.